Jason's first appearance in-game on April Fool's Day, 2012. He has reappeared on any Friday the 13th since then.

Conversation

When you click on Jason Maskface, he says, "Boo! It's Friday the 13th! Want to help me scare people? Or are you a scaredy cat?"

If you reply Yes, then he turns you into a random monster so that you can go around scaring people. You also get a #4 ability that lets you turn those that you scare into "scaredy cats" (a random cat transformation).